<?php
if (!function_exists('gzcompress')) {
	trigger_error('gzip functions are not available', E_USER_ERROR);
	return 0;
}
class ADODB_Compress_Gzip {
	var $_level = null;
	var $_min_length = 1;
	function getLevel() {
		return $this->_level;
	}
	function setLevel($level) {
		assert('$level >= 0');
		assert('$level <= 9');
		$this->_level = (int) $level;
	}
	function getMinLength() {
		return $this->_min_length;
	}
	function setMinLength($min_length) {
		assert('$min_length >= 0');
		$this->_min_length = (int) $min_length;
	}
	function ADODB_Compress_Gzip($level = null, $min_length = null) {
		if (!is_null($level)) {
			$this->setLevel($level);
		}

		if (!is_null($min_length)) {
			$this->setMinLength($min_length);
		}
	}
	function write($data, $key) {
		if (strlen($data) < $this->_min_length) {
			return $data;
		}

		if (!is_null($this->_level)) {
			return gzcompress($data, $this->_level);
		} else {
			return gzcompress($data);
		}
	}
	function read($data, $key) {
		return $data ? gzuncompress($data) : $data;
	}

}

return 1;

?>